162 lines
4.6 KiB
HTML
162 lines
4.6 KiB
HTML
<html>
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<head>
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<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.css" />
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<!--[if lte IE 8]>
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<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.ie.css" />
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<![endif]-->
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<style type="text/css">
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#map {
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height: 600px;
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width: 80%;
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}
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#results {
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width: 18%;
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position: absolute;
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top: 0;
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right: 0;
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}
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#results li span {
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cursor: pointer;
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color: blue;
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text-decoration: underline;
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}
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.active_result {
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background-color: #eee;
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}
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</style>
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<script src="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.js"></script>
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</head>
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<body>
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<form method="get" action="#" id="search_form">
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<input type="text" id="q" name="q" value="Phoenix" /><input type="submit" />
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</form>
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<div id="map"></div>
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<ul id="results"></ul>
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<script type="text/javascript">
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var query = "";
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var map = L.map('map'); //.setView([51.505, -0.09], 13);
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L.tileLayer('http://{s}.tile.cloudmade.com/4be2d4a8b7ae4a5e8ebc0558bb5d7db4/997/256/{z}/{x}/{y}.png', {
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attribution: 'Map data © <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="http://cloudmade.com">CloudMade</a>',
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maxZoom: 18
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}).addTo(map);
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// Get url params
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var prmstr = window.location.search.substr(1);
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var prmarr = prmstr.split ("&");
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var params = {};
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for ( var i = 0; i < prmarr.length; i++) {
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var tmparr = prmarr[i].split("=");
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params[tmparr[0]] = tmparr[1];
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}
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// decode query param
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if(params["q"] && params["q"].length > 0){
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handleQuery(decodeURIComponent(params["q"]).replace(/\+/g, ' '));
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}
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else
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{
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if (navigator.geolocation)
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{
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navigator.geolocation.getCurrentPosition(function(pos){
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map.setView([pos.coords.latitude,pos.coords.longitude],10);
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// AJAX request for checking where we are
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reverseLookup(pos.coords.latitude,pos.coords.longitude,10,function(xmlhttp) {
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// Decode response as JSON
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response = JSON.parse(xmlhttp.responseText);
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if(response.length > 0){
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console.log(response);
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}
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});
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},function(error){
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console.log(error);
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updateMap("Tempe, Arizona",[[33.6569,-111.6801],[33.3133,-112.3276]])
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});
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}
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else {
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updateMap("Tempe, Arizona",[[33.6569,-111.6801],[33.3133,-112.3276]])
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}
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}
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function handleQuery(query){
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window.query = query;
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// AJAX request for geolocation of query
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forwardLookup(query,function(xmlhttp) {
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// Decode response as JSON
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response = JSON.parse(xmlhttp.responseText);
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if(response.length > 0){
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// Display all results in sidebar
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response.forEach(function(result,index){
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appendToResults(index,result.display_name);
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});
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// Fit map to bounds of first result
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showItem(0);
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}
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else {
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appendToResults("No Results");
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}
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});
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}
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function forwardLookup(query,callback){
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xmlhttp=new XMLHttpRequest();
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xmlhttp.open("GET","http://nominatim.openstreetmap.org/search/"+encodeURIComponent(query)+"?format=json",true);
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xmlhttp.send();
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xmlhttp.onreadystatechange = function(xmlhttp){
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if (xmlhttp.readyState==4 && xmlhttp.status==200) {
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callback(xmlhttp);
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}
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};
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}
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function reverseLookup(lat,long,zoom,callback){
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xmlhttp=new XMLHttpRequest();
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xmlhttp.open("GET","http://nominatim.openstreetmap.org/reverse?format=json&lat="+encodeURIComponent(lat)+"&lon="+encodeURIComponent(lat)+"&zoom="+encodeURIComponent(zoom),true);
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xmlhttp.send();
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xmlhttp.onreadystatechange = function(xmlhttp){
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if (xmlhttp.readyState==4 && xmlhttp.status==200) {
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callback();
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}
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};
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}
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function appendToResults(index,name){
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var item = document.createElement("li");
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item.innerHTML = "<span onclick=\"showItem('"+index+"');\">"+name+'</span>';
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item.id = "result_"+index;
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document.getElementById("results").appendChild(item);
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}
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function showItem(index){
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// Change this item to be the active one
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var results = document.getElementsByClassName("active_result")
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for(var i=0; i < results.length; i++){
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console.log(i);
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results[i].className = "";
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}
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document.getElementById("result_"+index).className = "active_result";
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// Update the map
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updateMap(query,[[response[index].boundingbox[0], response[index].boundingbox[2]],
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[response[index].boundingbox[1], response[index].boundingbox[3]]]);
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}
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function updateMap(query,bounds){
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// Set search textbox to query
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document.getElementById("q").value = query;
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// Fit map to the GPS boundaries
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map.fitBounds(bounds);
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};
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</script>
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</body>
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</html> |